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从2020年到2025年，中国三大电信运营商预计将投入人民币共9000亿至1.5万亿元用于5G网络建设。
China's big three telecom carriers are forecast to spend 900 billion to 1.5 trillion yuan in total on 5G network construction from 2020 to 2025.
更重要的是，上海电信能够降低整体网络建设成本，这在推出了3 G服务时是一个关键因素。
More importantly, Shanghai Telecom was able to reduce overall network construction cost - a key factor in launching its 3g service.
今年，中国国有电信公司会将利润丰厚的3G基础设施建设合同发包出去。
This year, China's state-owned telecom firms will parcel out lucrative contracts for companies to build 3G infrastructure.
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